Risk of miscarriage?

This is my second baby.. I have a daughter who just turned a year back in December. I’m 8 weeks and 5 days. Baby is measuring right on track and had a heart rate of 174. I have had losses at 8 weeks years ago and a chemical before my daughter at 5 weeks so miscarriage is always on my mind unfortunately. I know it can happen at any point but what are the odds after seeing baby with a heartbeat?